Seahawks CB Richard Sherman -- Raging In Vegas ... Ankle Injury Can't Stop Me!

DON'T YOU EVER TALK ABOUT RICHARD SHERMAN'S ANKLE ... 'cause less than one week after injuring it in the Super Bowl, the Seahawks star was partying hard on it during a rager in Vegas!!!

Sherman -- along with fellow Legion of Boomer Kam Chancellor -- hit up the Chateau nightclub in Sin City Saturday night ... and cut loose, despite suffering a high ankle sprain during the Feb. 2nd victory.

Seemed like Sherman was feeling "no pain" that night -- we're guessing the gang of hot chicks following him around that night makes a man forget about a freak joint injury.

Meanwhile, Peyton Manning is still sad somewhere ..